Paper liner for boxes



Filed April 5, 1933 INVENTOR W/LL/AM WELLINGTON MOORE ATTORNEYS Patented July 24, 193 4 PAPER LINER FOR BOXES William Wellington Moore, Vancouver, British Columbia, Canada Application April 5, 1933, Serial No. 664,542

3 Claims.

My invention relates toimprovements in paper liners for boxes, which are particularly adapted for use in lining boxes in which butter is compressed and packed.

' In the packing of butter in boxes diihculty is experienced in so packing it that the'fiavour not imparted to the butter from the wood used in the manufacturing of the box.

Mould is frequently manifested on the surface I of the butter from the seepage of water contents from the butter and fermentation due to extra,- neous bacterial conditions. I have discovered that this can be largely overcome if the butter can be kept from actual contact with the wood I and seepage of the water content is permitted to get away from the butter without forming direct communication with the wood. It is with a View to overcoming these difficulties that the present liner is designed, which consists essentially of a I liner comprising two strips of suitably treated paper laid one across the other over the bottom of the box and means are provided for the dis-- charge of the moisture content of the butter and the retention of the butter from actual contact with the box, as will be more fully described in the following specification and shown in the accompanying drawing, in which:-

Fig. 1 is a perspective View of a box fitted with the invention and showing one end of the box .1 removed.

Fig. 2 is a general view of the liner made in strip form from a continuous strip of paper.

In the drawing like characters of reference indicate corresponding parts in each figure.

In the preferred form of the invention I take a strip of paper generally indicated by the numeral 1 and pass it through a set of rolls where it is split longitudinally along the line indicated by the numeral 2 to divide it into two strips 3 and 4. The strips 3 and 4 will be creased along the transverse lines 5 and 6, and the strip is also transversely creased as at 7, longitudinal creases are formed as at 8 on the strip 3 and transverse lines of weakness or perforations are formed at 9, which lines are provided with small starting notches on each side of both strips as at 10, the reason for which is that the paper preferred is relatively heavy and a starting notch will greatly facilitate the severance of the strips at the desired .Jline.

At the intersection of the lines 5 and 8 a relatively large seepage perforation 11 preferably circular, is formed, which merges into a triangular perforation 12 extending towards the borders of the strip 3, similar triangular perforations 12 are formed at the intersection of the lines 6 and 8. Between the triangular perforations. 12 and the border lines of the strip 3 webs 13 are formed,

the purpose of which are to leave a continuous or unbroken edge at the sides of the strip. Further seepage perforations 14 are provided in spaced relation along the creases 5,.

The paper of which these liners are made is preferably impregnated with a solution of wax or oils to render it impervious to moisture and various forms of contamination, the preferred process being to form the creases as before described when the strips are passed through rollers and suitable folding devices, whereby the paper is well broken along the lines 8 to make the strip fold with consummate ease and subsequently to form the perforations, when the paper will be passed into a bath of solution where it is impregnated and suitably pressed and dried and made up onto rollsof suitable size for delivcry to the trade.

By providing the ends of the transverse creases with the webs 13, the strip can pass through the sundry rolls and any immersion or impregnation process can be adopted without causing the borders 15 of the strip to fold back or become broken or torn adjacent the ends of the transverse creases 5 and 6. r

The numeral 16 indicates generally a box having a bottom wall 17, side walls 18 and end walls 19 (one of which is omitted for the purpose of showing the liner).

In use a liner strip is severed from the roll by tearing it along the line of weakness 9 and is placed across the box and its centre section A pressed downwards into contact with the bottom wall of the box. By virtue of the creases 5 and the seepage perforations 14, the strip will fold readily, so that the sections 13 will follow down- Wards and lie in contact with the side walls 18, with the pressing downwards of the section A the borders of the strip will automatically fold to lie against the end walls 19, with thewebs l3 between the sections A and B folding over in the manner shown. When the strip is in position with the sections A and B in the box, the free ends, or sections C are pressed outwardly breaking the webs 13 between the sections B and C and allowing said sections 0 to fall outwardly as shown and to fold again along the creases '7 towards the sides of the box as indicated by dotted lines in Figure 1. A strip 4 is then taken and placed transversely of the strip 3 and is handled in the same manner, pressing down the section D onto the section A, thus allowing the sections 11 E to contact with the end walls 19 and lie within the folded borders 15 of the strip 3.

It is invariably found that the lower edges of the block of butter forced into a box are rounded and do not therefore fit intimately into the angles around the bottom wall of the box, though a powerful ram is used to compress the butter, the intersp ace, thoughslight, between the edgesof the butter and the angles of the bottom-wa'll-pidvides a suitable space for seepage to flow, which seepage escapes through the perforations 11 and 14 in the strip, these perforations, it should be noted, may be partially but not wholly covered by the strip 4. The rounding of theloiv'er corner of the block of butter due'tolack of localized pressure'when filling prevents any extrusion'of butter through the perforations 11, so that actual contact between the butter and" the wood sur-' faces of the box is definitely precluded:

What I claim as my invention is:

V l: Adiner'for butter'boxes and the like corn; piisingtwo strips ofpape'r, one to entirely cover the two side walls; the bottom wall and the borders of the remaining sidewalls of the'box and the o'ther to entirely cover the remaining side and the b ottorii'v'valli said'first strip having a plurality of relatively small seepage perforations at the inter-i'se'ctioii of the side and bottom walls adaptedto bepartially covered by the second named-strip, said-first named strip having apertur'e's' iii closep-roxiinity t'oeaehside and within the remaining side wall border covering portions to facilitate the folding of said portions at the corners of the box. 7

2. In a liner for butter boxes and the like consisting of two strips of paper adapted to be placed with one strip extending transversely of the other across the bottom wall of the box, one of said strips; bein gcreased longitudinally and transvers'ely for foldihg and consisting or sideahd bottorn sections and a'border extending along both sides of said strip, said border having apertures at the intersection of transverse and longitudinal creases, one of the borders of said apertures servmete-maintain the edges of the strip unbroken substantially as described.

3 z-Iria liner for butter boxes and the like con-, sisting of two strips of paper with one strip extefidi'ri'gtreiiisvi sely'of the other across the bottom wall of the box, one of said strips being creased longitudinally and transversely for folding and consisting ofside and bottom sections anda border extending along-both sides of said strip, saidstrip having apertures at the intersection of the longitudinal and transverse creases, and-a narrowparallel-sided marginal portion to each aperture adjacent the; side of thestrip said portion serving to maintain thestrip unbroken during manufacture-and when being fitted into the'box.

WILLIAM-VVELEilVTSN Mboffi. 

